Data Execution prevention? DEP? This is preventing my iTunes from opening?

Okay, so I finally got the "Critical Quicktime component missing" error message off of there, but now everytime I try to open iTunes, it says that i has "stopped working" and DEP prevents it from opening. Well, when I go to change my DEP settings, it says that it will not run without it. I'm quickly approaching my wits end. Please help me.

First check to see if QUicktime works normally, iTunes will not work without it.
If Quicktime is OK, then use this troubleshooting article:
http://support.apple.com/kb/TS1717
If QUicktime does not work, describe what happens with any error message in full.
Have you installed any of the following:
ACE & K-Lite mega codecs package, QT alternative, Storm codec, WinAVI video converter, Mpcstar, (possibly starcodec pack, 3ivx)
If so uninstall them, they are know to casue problems with QUickitme.
Then download the version of Quickime without iTunes:
http://www.apple.com/quicktime/download/win.html
Now Remove Quicktime using the method for Quicktime in this article (just Quicktime):
XP
http://support.apple.com/kb/HT1925
Vista
http://support.apple.com/kb/HT1923
When you come to your C:\Windows\system32\ folder you can delete any file or folder with Quicktime in the name.
Restart you computer
Install the stand alone Quicktime and check if it starts.
If it does you are in a position to find out if iTunes is OK.

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    HT1925: Removing and Reinstalling iTunes for Windows XP
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    Hello Cailin,
    The Data Execution Prevention (DEP) is a security feature included in
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    Here are two methods to fixing this problem:
    Method 1:
    Follow these steps to add an exception for the program from the DEP error message:
    When you receive the error message click Change Settings.
    Select the check box next to the program, and then click Apply.
    When you are prompted to restart your computer, click OK two times, and then restart your system.
    Method 2:
    You can also add an exception for the program by using System Properties in Control Panel. To do this, follow these steps:
    Click Start, click Run, type sysdm.cpl, and then click OK.
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    David A.
    National Instruments
    Applications Engineer

  • Data Execution Prevention preventing iTunes from working

    I have iTunes 8.0.2.20 running on Windows Server 2008 SP1. Whenever I plug in my iPod Nano, Data Execution Prevention (DEP) shuts down iTunes. I can't create an exception for iTunes in DEP since it gives the following error message:
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    No, i do not have quickTime player.
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